192
S.D. WY
MEE15K036
3. Piping Design
SYSTEM DESIGN
3-2. Piping Design
Selection criteria for joints
Total down-stream Indoor capacity
Joint
~
P200
CMY-Y102SS-G2
P201 ~
P400
CMY-Y102LS-G2
P401 ~
P650
CMY-Y202S-G2
P651 ~
CMY-Y302S-G2
*Concerning detailed usage of Joint parts, refer to its Installation Manual.
Header selection rule
4-branch Header 8-branch Header 10-branch Header
CMY-Y104-G CMY-Y108-G CMY-Y1010-G
Total down-stream Indoor capacity <=P200
<=P350
<=P600
* CMY-Y104-G can directly connect PQHY-P200YLM-A, but can NOT directly connect PQHY-P250YLM-A or above;
* CMY-Y108-G can directly connect PQHY-P200-350YLM-A, but can NOT directly connect PQHY-P400Y(S)LM-A
or above;
* CMY-Y1010-G can directly connect PQHY-P200-600Y(S)LM-A;
* CMY-Y104-G can NOT connect P200,P250 Indoor, but CMY-Y108, Y1010-G can do;
* Concerning detailed usage of Header parts, refer to its Installation Manual.
Note3.
Indoor capacity is described as its model size;
For example, PEFY-P32VMA-E, its capacity is P32;
Note4.
Total down-stream Indoor capacity is the summary of the model size of Indoors downstream.
For example, PEFY-P25VMA-E+PEFY-P32VMA-E: Total Indoor capacity=P25+P32=P57
Note5.
Piping sized determined by the Total down-stream indoor capacity is NOT necessary
to be bigger than the up-stream one.
i.e.
A>=B;
A>=C>=D
Note1. No Joint after Header; Piping direct to Indoor Unit from Header;
Note2. As bents cause pressure loss on transportation of refrigerant, fewer bents design is better;
Piping length needs to consider the actual length and equivalent length which bents are counted.
Equivalent piping length (m)=Actual piping "M" x Number of bent.
IU: Indoor unit , HU: Heat source unit
Fig. 3-2-1A Piping scheme
L1
L2
C
b
h1
c
d
g
e
A
B
D
a
HU
Joint
H (HU above IU)
H' (HU under IU)
IU
IU
f
E
IU
IU
IU
IU
IU
Header
1st Joint
Capped
3-2-1. PQHY-P200-600YLM Piping
Piping length
(m [ft.])
Item
Piping in the figure
Max. length Max. equivalent length
Total piping length
A+B+C+D+E+a+b+c+d+e+f+g
*1
-
Farthest IU from HU (L1)
A+C+D+E+g / A+B+c
165 [541']
190 [623']
Farthest IU from first Joint (L2)
C+D+E+g / B+c
40 [131']
40 [131']
Height between HU and IU (HU above IU) H 50
[164']
-
Height between HU and IU (HU under IU) H'
40
[131']
-
Height between IU and IU
h1
15 [49']
-
HU: Heat source Unit, IU: Indoor Unit
*1 300 [984] for PQHY-P200-300YLM, 500 [1640] for PQHY-P350-600YLM
Piping "A" size selection rule
(mm [in.])
Heat source unit
Pipe(Liquid)
Pipe(Gas)
PQHY-P200YLM
ø9.52 [3/8"]
ø19.05 [3/4"]
PQHY-P250YLM
ø9.52 [3/8"]*1
ø22.20 [7/8"]
PQHY-P300YLM
ø9.52 [3/8"]*2
ø22.20 [7/8"]
PQHY-P350YLM
ø12.70 [1/2"]
ø28.58 [1-1/8"]
PQHY-P400-600YLM
ø15.88 [5/8"]
ø28.58 [1-1/8"]
*1. L1>=90m [295ft.], ø12.70mm [1/2in.]; L1<90m [295ft.], ø9.52mm [3/8in.]
*2. L1>=40m [131ft.], ø12.70mm [1/2in.]; L1<40m [131ft.], ø9.52mm [3/8in.]
Bent equivalent length "M"
Heat source Model
M (m/bent [ft./bent])
PQHY-P200YLM
0.35
[1.15]
PQHY-P250YLM
0.42
[1.38]
PQHY-P300YLM
0.42
[1.38]
PQHY-P350YLM
0.50
[1.64]
PQHY-P400YLM
0.50
[1.64]
PQHY-P450YLM
0.50
[1.64]
PQHY-P500YLM
0.50
[1.64]
PQHY-P550YLM
0.50
[1.64]
PQHY-P600YLM
0.50
[1.64]
Piping"B","C","D","E"size selection rule (mm
[in.])
Total down-stream Indoor capacity
Pipe(Liquid)
Pipe(Gas)
~ P140
ø9.52 [3/8"]
ø15.88 [5/8"]
P141 ~ P200
ø9.52 [3/8"]
ø19.05 [3/4"]
P201 ~ P300
ø9.52 [3/8"]
ø22.20 [7/8"]
P301 ~ P400
ø12.70 [1/2"]
ø28.58 [1-1/8"]
P401 ~ P650
ø15.88 [5/8"]
ø28.58 [1-1/8"]
P651 ~ P800
ø19.05 [3/4"]
ø34.93 [1-3/8"]
P801 ~
ø19.05 [3/4"]
ø41.28 [1-5/8"]
Piping "a","b","c","d","e","f","g" size selection rule (mm
[in.])
Indoor Unit size
Pipe(Liquid)
Pipe(Gas)
P15,P20,P25,P32,P40,P50,GUF-50RD(H) ø6.35 [1/4"]
ø12.70 [1/2"]
P63,P71,P80,P100,P125,P140,GUF-100RD(H) ø9.52 [3/8"]
ø15.88 [5/8"]
P200
ø9.52 [3/8"]
ø19.05 [3/4"]
P250
ø9.52 [3/8"]
ø22.20 [7/8"]
Heat source unit model
Joint model
P350 to P600
CMY-Y202S-G2
P250 to P300
CMY-Y102LS-G2
See the table below for the first joint of
the heat source unit described below.
0000003812.BOOK 192 ページ ２０１５年１１月１１日 水曜日 午後３時５９分
